html {
    margin-bottom:100px;
    margin-right:100px;
    margin-left:100px;
    background:lightyellow;
}
html * {
    border:1px solid black;
}
body {
    margin:0px;
    padding:20px;
    padding-top:0px;
    width:700px;
    font-family:verdana,arial,sans-serif;
    font-size:18px;
}
h1 {
    margin:0;
    margin-top:10px;
    font-size:30px;
    margin-bottom:30px;
}
